There were several ways to return to the main page of the iPhone 6: 1. Close the page you are currently reading: In the novel reading interface, press and hold the page you want to close and select "Close" to return to the home page. 2. Swipe the screen: Swipe left or right to return to the home page. 3. Press the home button: Gently press the Home button at the bottom of the screen to return to the main interface. 4. Clear the buffer: If you are using iOS13 or later, you can try to clear your reading history and buffer to see if there are any improvements. I hope these methods can help you return to the main page. If you have any other questions, feel free to ask me.